METHOD OF VIBRATION NEEDLE HOBBING Russian patent published in 2012 - IPC B23C3/12 B06B1/18 B08B1/04 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for deflashing, chamfering and planar machining at milling, multiposition and hybrid machine tools. Proposed method comprises revolving needle cutter and feeding workpiece in lengthwise and crosswise directions per every double stroke of machine tool table. Workpiece is additionally subjected to torsional vibrations by device with its case top provided with washer made from antifriction material that doubles as antifriction bearing. Round plate is fitted on said washer by flexible and rigid rings and provided with dead hole to receive rotor journal to run in bearing. Said journal is offset relative to main journals. The latter run in bearings of rotary air engine rotor. Stator is arranged at case center and provided with chamber to feed compressed air acting on rotor vanes.

EFFECT: expanded operating performances, higher quality and efficiency, reduced costs.

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